So your premise is flawed and thus your position is (ironically) irrelevant to the topic.
As far as I can tell, the discussion was on-topic given that a former professor, Minsky, was being accused of "assault." Stallman's questions and statements revolved around the use of that term and the trouble that its lack of specificity brings.
The university is (ideally) full of scholars holding controversial views, asking uncomfortable questions, and being accused of all manner of crimes. If one of them (Minsky) can be tarred and feathered without a trial, any of them could be.
If their views are banal, then there is likely nothing novel academically coming out of them. That’s literally the opposite point of professorship, tenure, and academic inquiry.
I recommend you look up the definition of “banal” because you either used it wrong or you don’t know what the point of tenure is.
Imagine a person emails a large distribution group at their office with the following question: "I notice we have many black employees: does anything think it might be beneficial if we return to chattel slavery and own them? Could lower our bottom line"
Would that person be fired? Should that person be fired? Are there questions that shouldn't be asked? Is everything fair game?
I expressed no opinion either way on that topic. I don't even consider the topic relevant to my position, which is that once we agree that merely asking some questions will result in harsh punishments, we're hosed as a society.
Today, it's the question you hate that gets punished. Tomorrow it will be the question you hold most dear.